Fantastic Children begins with the introduction of a group of mysterious, white-haired children, who do not appear to age and have spent several centuries wandering throughout the cities of Europe. Several years later, in the year 2012, an energetic, young boy, Tohma, meets a quiet and introverted girl, Helga, on the shores of Papan Island, and the both of them venture upon a fated quest, through which their paths intertwine